----------------------------------------------------------------------------- Mauna Loa Solar Observatory Observer's Log ----------------------------------------------------------------------------- Thu Sep 9 16:53:59 GMT 1999 Year: 99 Doy: 252 Observer: koon Thu Sep 9 16:54:26 GMT 1999 CHIP Startup--Initializing new tape Thu Sep 9 16:57:40 GMT 1999 MKIV Start Patrol Thu Sep 9 16:57:52 GMT 1999 PICS Start Patrol Thu Sep 9 16:57:52 GMT 1999 PICS Start Patrol Thu Sep 9 17:01:58 GMT 1999 CHIP Bias Thu Sep 9 17:02:51 GMT 1999 CHIP End Bias Thu Sep 9 17:03:01 GMT 1999 CHIP Water Thu Sep 9 17:03:38 GMT 1999 CHIP End Water LOW-L COMMENT: Thu Sep 9 17:09:15 GMT 1999 File count was at 78 so I removed L00624 from drive #0 and installed L00626 there. Restarted with data going to L00625 in drive #1. COMMENT: Thu Sep 9 17:39:39 GMT 1999 Dome was blocking part of Spar, moved it. Thu Sep 9 18:00:48 GMT 1999 CHIP Bias Thu Sep 9 18:01:49 GMT 1999 CHIP End Bias Thu Sep 9 18:02:04 GMT 1999 CHIP Water Thu Sep 9 18:02:30 GMT 1999 PICS Flat Thu Sep 9 18:02:43 GMT 1999 CHIP End Water Thu Sep 9 18:05:03 GMT 1999 PICS End Flat Thu Sep 9 18:21:02 GMT 1999 MKIV Start Cal Thu Sep 9 19:00:33 GMT 1999 PICS polarization_calibration Thu Sep 9 19:03:03 GMT 1999 CHIP Bias Thu Sep 9 19:03:59 GMT 1999 CHIP End Bias Thu Sep 9 19:04:09 GMT 1999 CHIP Water Thu Sep 9 19:04:47 GMT 1999 CHIP End Water Thu Sep 9 19:13:16 GMT 1999 MKIV Start Patrol COMMENT: Thu Sep 9 19:45:42 GMT 1999 Extended the dome slot about 10 minutes ago. Thu Sep 9 20:02:47 GMT 1999 CHIP Gain Thu Sep 9 20:07:15 GMT 1999 CHIP End Gain Thu Sep 9 20:07:26 GMT 1999 CHIP Bias Thu Sep 9 20:08:15 GMT 1999 CHIP End Bias Thu Sep 9 20:08:24 GMT 1999 CHIP Water Thu Sep 9 20:09:01 GMT 1999 CHIP End Water Thu Sep 9 21:00:50 GMT 1999 CHIP Bias Thu Sep 9 21:01:45 GMT 1999 CHIP End Bias Thu Sep 9 21:02:00 GMT 1999 CHIP Water Thu Sep 9 21:02:43 GMT 1999 CHIP End Water MKIV COMMENT: Thu Sep 9 21:24:51 GMT 1999 I'm investigating the possible causes for unusual Sky Transmission readouts that are getting written to MkIV data. According to the screen display they are varying between about 280 and about 340 regularly, with a lot of extreme swinging with a period of 4 seconds, very regular too. The LED shows a fairly constant value of around 1400, the Sky Trx telescope on the Spar supplies the signal for both of these readings, so it appears to be working correctly. About 12 days ago the screen readings were about 355 with very little fluctuation of about +/- 1. The AtoD connection at the KCC is a possible problem. Thu Sep 9 22:02:49 GMT 1999 CHIP Bias Thu Sep 9 22:03:44 GMT 1999 CHIP End Bias Thu Sep 9 22:03:54 GMT 1999 CHIP Water Thu Sep 9 22:04:34 GMT 1999 CHIP End Water Thu Sep 9 22:22:21 GMT 1999 CHIP CHIP End Patrol Thu Sep 9 22:22:32 GMT 1999 PICS End Patrol Thu Sep 9 22:29:13 GMT 1999 MKIV End Patrol **MKIV PROBLEM**: Thu Sep 9 22:31:47 GMT 1999 The connection to the Analog board on the KCC is good, two wires soldered to pins that are pushed into two holes on the 37 Pin black connector on the front of the chassis. The voltage between the pins is steady at 3.25 to 3.26 vdc, the same as the voltage between the black wire and the board and chassis grounds. The white wire is at the board and chassis grounds. Also, this voltage corresponds to the voltage shown on the 2nd GUI screen, the field titled Sky Transmission. So it looks like a steady signal that is within defined range is reaching the Analog board, and that board is grounded correctly. But the Sky Trx reading on the primary Mk4 GUI is still jumping between around 280 and around 340. I measured the voltages while the pins where connected to the board connector. **MKIV PROBLEM**: Thu Sep 9 23:33:44 GMT 1999 There is about 0.15+ VAC noise on the SKY Trx signal line. No discernable pattern on scope trace , lots of various noise signals mixed together I think. The cable isn't shielded. May be able to pick out pattern on trace Maybe a pattern that matches the 4 seconds (4 screen writes) period between maximum readings? COMMENT: Thu Sep 9 23:46:26 GMT 1999 TAPES: ****** MKIV: 99252 CHIP: C00916 PICS: P01540 LOWL: L00625 in drive #1 Thu Sep 9 23:47:23 GMT 1999 MkIII 16_57.rawmk3 18_00.rawmk3 19_44.rawmk3 20_47.rawmk3 21_50.rawmk3 17_01.rawmk3 18_03.rawmk3 19_48.rawmk3 20_51.rawmk3 21_54.rawmk3 17_04.rawmk3 18_07.rawmk3 19_51.rawmk3 20_54.rawmk3 21_57.rawmk3 17_08.rawmk3 18_10.rawmk3 19_55.rawmk3 20_58.rawmk3 22_01.rawmk3 17_11.rawmk3 18_14.rawmk3 19_58.rawmk3 21_01.rawmk3 22_04.rawmk3 17_15.rawmk3 18_17.rawmk3 20_02.rawmk3 21_05.rawmk3 22_08.rawmk3 17_18.rawmk3 18_24.rawmk3 20_05.rawmk3 21_08.rawmk3 22_11.rawmk3 17_21.rawmk3 18_31.rawmk3 20_09.rawmk3 21_12.rawmk3 22_15.rawmk3 17_25.rawmk3 18_39.rawmk3 20_12.rawmk3 21_15.rawmk3 22_18.rawmk3 17_28.rawmk3 19_13.rawmk3 20_16.rawmk3 21_19.rawmk3 22_22.rawmk3 17_32.rawmk3 19_16.rawmk3 20_19.rawmk3 21_22.rawmk3 22_25.rawmk3 17_35.rawmk3 19_20.rawmk3 20_23.rawmk3 21_26.rawmk3 c18_21.rawmk3 17_39.rawmk3 19_23.rawmk3 20_26.rawmk3 21_29.rawmk3 c18_28.rawmk3 17_42.rawmk3 19_27.rawmk3 20_30.rawmk3 21_33.rawmk3 c18_35.rawmk3 17_46.rawmk3 19_30.rawmk3 20_33.rawmk3 21_36.rawmk3 17_49.rawmk3 19_34.rawmk3 20_37.rawmk3 21_40.rawmk3 17_53.rawmk3 19_37.rawmk3 20_40.rawmk3 21_43.rawmk3 17_56.rawmk3 19_41.rawmk3 20_44.rawmk3 21_47.rawmk3